I need to get my car inspected real bad I already got a ticket for it once .

1994 With a JDM h22. It has a DC header thats dented badly on the downpipe bends. Magnaflow hiflowcat and a resonator from a 03 eclipse? haha. 5Zigen from the axel back.

I have no idea when the 02 sensor was replaced last. And have not changed spark plugs yet.

I have run rxp and I failed the emissions test. THe nox is what is failing



My value on highspeed NOx(ppm) Standard: 945 Current Reading:2038
And low speed Standard: 1045 Current reading: 2253

IM wondering if the highflow cat is already trashed cause ive driven alot of miles on it to cali and back from texas.

The ignition timing is set perfectly at 15Deg BTDC

Should i change that just to pass?


Any ideas are welcome but please only hands on advice. THanks Any other questions about the setup just ask.

 

NOx is from high cylinder temperatures...what reduces your NOx is your EGR system. trying cleaning your EGR ports and/or replace EGR valve

Not to familiar with jdm h22...i'm not sure if they even have an EGR valve

 

^They do, I believe though if it was his valve he would get a CEL, probably just needs cleaning.